Q1.
The revised contract will remain valid ______ the end of the fiscal year.
A. at
B. by
C. until
D. during
Q2.
Ms. Patel was praised for completing the task ______ ahead of schedule.
A. success
B. successful
C. successfully
D. successively
Q3.
All staff members must follow the new safety guidelines ______ they are officially announced.
A. once
B. unless
C. although
D. despite
Q4.
The marketing report contains information that is highly ______.
A. confidence
B. confidential
C. confidentially
D. confide
Q5.
The company plans to ______ additional staff to support the new project.
A. recruit
B. recruitment
C. recruiter
D. recruiting
Q6.
Please submit the expense form ______ attaching all required receipts.
A. before
B. during
C. after
D. since
Q7.
Mr. Johnson has worked in the finance department ______ over fifteen years.
A. since
B. during
C. from
D. for
Q8.
The training session was postponed ______ several key speakers were unavailable.
A. although
B. because
C. unless
D. while
Q9.
Employees are encouraged to communicate more ______ with their supervisors.
A. frequent
B. frequency
C. frequently
D. frequenting
Q10.
The new software update aims to improve system ______ and security.
A. perform
B. performance
C. performing
D. performed
✅ Answers・詳しい解説・目安スコア
Q1 → C
🎯 目安スコア：550点
◆ 解説
until + 時点
「〜までずっと有効」。
by は「期限までに」で意味がズレる。
Q2 → C
🎯 目安スコア：600点
◆ 解説
動詞 completing を修飾 → 副詞 successfully。
品詞問題の基本。
Q3 → A
🎯 目安スコア：600点
◆ 解説
once = 「〜したらすぐに」。
公式発表後に従う、という時間条件。
Q4 → B
🎯 目安スコア：500点
◆ 解説
highly confidential
→ TOEIC超頻出コロケーション。
Q5 → A
🎯 目安スコア：550点
◆ 解説
plan to + 動詞原形
→ recruit（採用する）。
Q6 → C
🎯 目安スコア：550点
◆ 解説
領収書を「添付した後に」提出。
after が文脈に合う。
Q7 → D
🎯 目安スコア：550点
◆ 解説
for + 期間
over fifteen years は期間表現。
Q8 → B
🎯 目安スコア：600点
◆ 解説
理由を説明 → because。
接続詞の意味判断。
Q9 → C
🎯 目安スコア：600点
◆ 解説
communicate（動詞）を修飾 → frequently（副詞）。
Q10 → B
🎯 目安スコア：650点
◆ 解説
improve + 名詞
performance and security
名詞の並列構造。
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